Adipocytes · Histology

Compared to white adipose tissue, brown adipose tissue has:

  1. A much poorer blood supply and fewer autonomic nerve endings.
  2. A denser capillary network and greater sympathetic innervation.
  3. Fewer mitochondria per cell and lower cytochrome oxidase levels.
  4. A larger average cell diameter and prominent unilocular droplets.
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Correct answer: A denser capillary network and greater sympathetic innervation.

Brown fat is highly vascularized to facilitate the rapid distribution of heat to the rest of the body. It also receives dense sympathetic innervation to trigger thermogenesis via norepinephrine release.

Difficulty: Medium Question 15 of 20

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